Algebra is the branch of mathematics that studies certain abstract systems, known as algebraic structures, and the manipulation of statements within these systems. Elementary algebra generalizes arithmetic by using variables in addition to numbers. It covers methods of transforming equations to solve them by isolating variables. Linear algebra examines systems of several linear equations and techniques to determine for which values all equations in a system are true at the same time. Abstract algebra investigates algebraic structures, which consist of a set of objects together with operations defined on that set. It distinguishes algebraic structures, such as groups, rings, and fields, based on their number of operations and the laws they follow. Algebraic methods were first studied in ancient times to solve specific problems. As algebra evolved, it became increasingly abstract and generalized, leading to many applications in other branches of mathematics and the empirical sciences.
Read more: <https://en.wikipedia.org/wiki/Algebra> _______________________________ Today's selected anniversaries: 1936: Republic of China leader Chiang Kai-shek was kidnapped by Marshal Chang Hsueh-liang, a former warlord of Manchuria. <https://en.wikipedia.org/wiki/Xi%27an_Incident> 1988: Three trains collided near Clapham Junction railway station in London, killing 35 people and injuring 484 others. <https://en.wikipedia.org/wiki/Clapham_Junction_rail_crash> 2000: The U.S. Supreme Court ruled in Bush v. Gore that the recount of ballots cast in Florida for the presidential election be stopped, effectively making George W. Bush the winner. <https://en.wikipedia.org/wiki/Bush_v._Gore> 2021: At the season-ending Abu Dhabi Grand Prix, Max Verstappen overtook Lewis Hamilton on the final lap to become World Drivers' Champion. <https://en.wikipedia.org/wiki/2021_Abu_Dhabi_Grand_Prix> _____________________________ Wiktionary's word of the day: murrain: 1. (archaic, uncountable) Infectious disease; pestilence, plague; (countable) sometimes used in curses such as a murrain on someone: an outbreak of such a disease; a plague. 2. (countable, figurative, archaic) A widespread affliction, calamity, or destructive influx, especially when seen as divine retribution; a plague. 3. (countable, veterinary medicine, chiefly historical) Any of several highly infectious diseases of cattle or other livestock, such as anthrax, babesiosis, or rinderpest; or a particular epizootic thereof; also, an infectious disease affecting other animals, such as poultry. 4. (countable, by extension, phytopathology) An infectious disease affecting plants. 5. (obsolete) 6. (countable) A poor-quality green-salted animal hide. 7. (uncountable) Death, especially from an infectious disease. 8. (uncountable) Rotting flesh, especially of an animal which has died from a disease; carrion. 9. Disgusting or offensive, as if having an infectious disease; despicable, contemptible, loathsome, plaguey. 10. Used as an intensifier: to a great extent; extreme, intense. 11. (figurative, obsolete) Used as an intensifier: extremely, very. <https://en.wiktionary.org/wiki/murrain> ___________________________ Wikiquote quote of the day: Poets shouldn't commit suicide. That would leave the world to those without imaginations or hearts. That would bequeath to the world a mangled syntax and no love of champagne. Poets must live in misery and ecstasy, to sing a song with the katydids. Poets should be ashamed to die before they kiss the sun. --Nikki Giovanni <https://en.wikiquote.org/wiki/Nikki_Giovanni> _______________________________________________ Wikipedia Daily Article mailing list. To unsubscribe write to: [email protected] Questions or comments? Contact [email protected]
